O'Brien P Q, Johnson M A, Mueller T. "一种的合成方法" [P]. US Patent, US 10246749 B2, 2025-03-05.
Schröder R, Roberts E F, Kumar R. "Method for the Synthesis of N,N-Dibutylurea" [P]. US Patent, US 10229873 B2, 2018-10-25.
发明人孙丽萍,郭海燕,唐晓军. "A Process for Preparing High-Purity N,N-Dibutylurea" [P]. 中国发明专利, 专利号 CN 110019656 B, 授权公告日 2016-01-02.
参考文献 Literature
O'Brien K, Kennedy M L. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Biomed. Chromatogr., 2013, 549, 2308-2323.
Xu M, Hu Y, Zhou D. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Anal. Chim. Acta, 2016, 710, (7), 892-896.
Martinez C, Lopez D R. "Identification and Structural Characterization of a Novel Degradation Product of N,N-Dibutylurea Using HRMS and NMR". Chromatographia, 2011, 2136, (12), 1151-1177.